We have bought a new DELL Poweredge 630 rack server, with two Xeon E5-2690 (total of 28 cores, 56 hyperthreads) and 256 GB RAM, with 2 SSD which we set in RAID0 thanks to Btrfs. We shall use it for EPR data processing and to test our new EPR-I code based on the Pony language. Some similar racks with GPUs are planned but not yet funded.

Yann Le Duyann.ledu.fr@gmail.comnew32cores256gbbladetotestnoveleprimagingalgorithms2https://sites.google.com/feeds/content/hpu4science.org/hpu4science/81629714188435496162013-10-30T11:26:48.601Z2013-10-30T11:35:34.146Z2013-10-30T11:35:32.642ZA four to six months internship

We have applied for a PhD funding grant at the ANRT. Thanks to a new organization of our research institute, l'Institue de Chimie de Paris, we are now part of a team that links our institute to the Centre de Recherche et de Restauration des Musées de France (C2RMF), a research lab focusing on cultural heritage and hosted at the Louvre : we plan to apply our EPR imaging pipeline to the tomographic needs of the C2RMF. Our grant associates these two research labs to a private company, XtremViz, that works on an outstanding 2D and 3D image viewer called Vizua3D.

Yann is back from the Chebfun 2012 workshop: fantastic talks, rich discussions, great hosts. We now have many bits of knowledge to be incorporated back into our imaging pipeline. Given the attendance and wide range of interests, Chebfun project is experiencing an inflation. We are proud to be the first large scale --and yet academic-- application of the Chebfun framework, and we look forward to a fruitful collaboration with the Chebfun team.

Apart from continuing our work on applying Chebfun in every part of our imaging reconstruction pipeline, we shall now focus on three tasks:

develop a robust GPU acceleration module for Chebfun;

continue investigating our Radon approach for Chebfun 2D;

benchmark different languages that could replace Matlab for the Chebfun core code.

We are running our codes on the newest Nvidia GPU card, the GTX-690. For the moment, we don't see any significant gains even compared to the Tesla-C1090. The arithmetic intensity for our computations in imaging is probably not high enough.

This project has two goals: first, to develop a new methodology based on Electron Paramagnetic Resonance (EPR) to quantify the in vivo production of reactive oxygen species (ROS) in pathological tissues; second, to show the adequacy of such an approach for the understanding of chronic inflammatory mechanisms. Two mouse experimental models will be assessed, which differ both in the targeted organ and in the inflammatory process.

The MECV funding will allow us to demonstrate the feasibility of investigations, opening the way to more ambitious projects leading to applications in human pathology. In particular, the development of an EPRI spectrometer is already planned within the next four years for use at the HEGP hospital, and this MECV project proposal is an important step on the path to generalized use of EPR in human pathology studies.

Few days ago, we moved the GTX 295 in another machine, and since it dead. It worked well since the 25th of June 2009 until it was movec to another machine...

El Afrit Mariemafrit.mariem@gmail.comthegtx295isdead2https://sites.google.com/feeds/content/hpu4science.org/hpu4science/44934891174318479022012-01-20T07:35:15.830Z2012-02-07T23:17:29.220Z2012-02-07T23:17:29.218ZUpgrades on all the machines of the cluster

We just finished updating the NVIDIA drivers, CUDA and PyCUDA on workers and master.

For the NVIDIA, driver it's the version 290.10.For CUDA, we use the CUDA Driver Version 4.1.And for PyCUDA, it's pycuda 2011.2.2

El Afrit Mariemafrit.mariem@gmail.comupdatesontheholemachinesofthecluster2https://sites.google.com/feeds/content/hpu4science.org/hpu4science/71329687494548121442011-12-26T10:52:38.671Z2011-12-26T10:52:38.675Z2011-12-26T10:52:38.663ZThe HPU4Science Core in Tunisia for five days

The Core of Hpu4Science will be in Tunisia from 11th to 15th of January to start a new collaboration between the LCMCP laboratory under the direction of Pr. Didier Gourier and the CRISTAL laboratory under the direction of Pr. Faouzi Ghorbel.

The EuroSciPy meeting is a cross-disciplinary gathering focused on theuse and development of the Python language in scientific research.This event strives to bring together both users and developers ofscientific tools, as well as academic research and state of the artindustry.

It turns out we already found a new tool, a competitor to CULA : MAGMA. We met one of the multi-GPU MAGMA (called SPLAGMA) developpers, Emmanuel Agullon, and with his help we'll install SPLAGMA on our cluster.

El Afrit Mariemafrit.mariem@gmail.comacceptedforatalkatworkshopinversionetassimilationdimages6https://sites.google.com/feeds/content/hpu4science.org/hpu4science/83365890503755169962011-06-01T11:59:54.860Z2011-12-07T12:58:24.653Z2011-06-03T19:00:34.467ZInvited for a talk at 'Aristote' seminar